Fun factoid about thermal infra red imaging : you (almost?) never see shadows.
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Hence the almost, should have lost the ? tho.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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And I was surprised to discover that specular reflections appear on surfaces which aren't mirror-like at visible wavelengths.
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oh, this I knew some minor vestigial memory of an article I read when young
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